Steam boiler



(No Model.) 5 Sheets-Sheet 1 G. at J. N. WARRINGTON STEAM BOILER.

No. 459,928. Petented se t. 8, 189 1.

m: "cams vzrzns (20., marmumo. wAsmnomu, a. ct

(No Model.) 5'Sheets-Sheet 2.

G. & J. N. WARRINGTON.

STEAM BOILER;

No. 459,028. Patented Sept. 8, 1891.

(No Model.) 5 Sheets-Sheet; 3.

G. & J. N. WARR INGTON. STEAM BOILER.

No. 459,028. Patented Sept. 8, 1891.

{No Model.) 5 Sheets-Sheet 4.

G. & J. N. WARRINGTON.

STEAM BOILER.

No, 459,028. Patented Sept. 8, 1891.

(No Model.) 5 Sheets-Sheet 5.

G. 8t J. N. WARRINGTON. STEAM BOILER.

No. 459,02 Patented Sept. 8, 1891.

II I, u 1111,1111, 1,11

UNITED STATES PATENT OFFICE.

GEORGE \VARRINGTON AND JAMES N. \VARRINGTON, OF CHICAGO, ILLINOIS.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 459,028, dated September 8, 1891.

Application filed October 14, 1890. Serial No. 368,080. (No model.)

To all .whom it may concern: side by side and in a vertical position, while Be it known that we, GEORGE \VARRINGTON the steam-drums are similarly located and and JAMES NELSON IVARRINGTON, citizens of horizontally arranged at an elevation above the United States, residing at Chicago, Illithe water-drums. Thesteani and water drums 5 nois, have invented certain new and useful are connected by the return-pipcs G, which Improvements in Steam-Boilers, of which the form a passage for the water not evaporated.

following is a specification. The feed -water is preferably introduced Ourinvention has for its object to improve through a coil of pipes II, connected to the the construction of steam-boilersin such manheader I, which discharges into the water- 10 ner as to secure a more perfect circulation of drum. The drum, tubes, and return-pipes the heating-water and the complete separaare filled with water, the water-line being intion and superheating of the steam, and also dicated at a (t in Fig. 2. \Vhen the fire is to provide an improved construction of parts kindled and the temperature of the water to this end. reaches the boiling-point, the steam rises I5 Our invention is more particularly appli in the steam-drums, and in order to effect its cable to marine boilers, and we have shown partial separation we provide in said drums in the accompanying drawings two boilers of the baffle -plates J, which extend from the like construction connected together. Our front wall to near the back wall and from invention is applicable to a single boiler or a side to side of the drums, so as to provide 20 battery of boilers. a narrow passage only around their rear In the accompanying drawings, Figure 1 is ends. The circulation of water is established a front view of two boilers and their accesthrough the tubes, the lower portion of the sories, the left of the figure being in vertical steam-drum, the return-pipe, and the watersection and the right in elevation, some of the drum, and in order to completely separate the 25 parts in each shown in dotted lines. Fig. 2 steam from its entrained water we conduct is a longitudinal vertical section centrally of it through aseparator. (Particularly shown in one of the boilers, some of the pipes being Fig. 7 of the drawings.) This separator conshown in elevation and the grate-bars in elesists of the shell or casing, preferably of the vation. Fig. 3 is a plan view, part of the fig form shown and marked K, having a periph- 0 ure being in longitudinal section. Fig. 4 isa eral slit 7:, the walls overlapping but not in sectional elevation of a steam-boiler of modicontact to provide such slit. This construcfied construction but embodying our invention provides a tangential inlet for the steam, tion. Fig. 5 is a plan view thereof, and Fig. and in conjunction with the curved walls im- 6 is a longitudinal sectional elevation on the parts to it within the reparating-chamber a 35 line 6 U of Fig. 5 and showing the internal gyratory or rotary motion, the entrained waconstruction of the steam-drum and of a septer being thrown to the walls of the chamber arator therein; and Fig. 7 is a transverse secand arrested by the ledge K, at the base of tional elevation of the separator. which is an aperture k, through which the 0 In the drawings, A represents the casing water escapes and is discharged through the .40 surrounding the boiler and having in its front pipe L into the return-pipe G below the wathe fuel-doors B, with the fire-chamber C havtor-line. The drysteam escapes from the top ing therein the grate-bars D, beneath which of the separatorand is conducted bya branch is the ash-pit E. Above the fuel-pot are 10- pipe M into a steam-pipe N, which delivers to cated tubes F, which are preferably bent into a superheating-coil 0, located above tubes F 45 an elbow form, as shown,t-he rear ends of the and under the feed-coil II. The steam after tubes being expanded into the tube-sheet of being superheated is delivered outside the the water-drum G and the upwardly-extendboiler, as at I, Fig. 1, andis conducted thence in g ends in the tube-sheet of a steam-drum II. to the engine.

The preferredform of construction is shown lVe prefer to arrange the parts above de 50 in Figs. 1, 2, and 3 of the drawings, wherein scribed within the casing, so as to provide for two boilers of like construction are coupled the complete envelopment of the boiler with and in which the water-drums are located the products of combustion.

The modified construction shown in Figs. 4, 5, and 6 is the same in principle as the construction above described, the same referenceletters being applied to corresponding parts and the only differences consisting in the arrangement of the steam and water drums and feed and superheating coils.

Our improved boiler constructed and arranged as above described is adapted to the rapid and economical generation of steam at high pressure, and we secure these results mainly by the improved construction and combination of parts, and particularly in the combination and arrangement of parts Whereby the springing of the tubes and the consequent early destruction of the boiler is obviated. V

It will be observed that the water-tubes are of elbow form, and they are so made in order to provide for their expansion and contraction in use without springing at the tube-sheet, the flexure being exerted at the angle or bend of the tube without disturbance of the joint. The parts are also so arranged as to secure and maintain a perfect circulation of the water and efiective separation and superheating of the steam.

We claim 1. In a boiler of the type described, a waterdrum located at the back of the furnace, a steam-drum at the furnace-frontabove the firebox, a connection between said drums below the water-line, and a steam-generator composed entirely of a plurality of independent pipes having curved bends therein above the fire-box and having their horizontal portions independently joined directly to the Waterdrum, the latter having an area as great or greater than the combined areas of the inlets to the several generating-pipes and said pipes having their upright portions independently joined directly to the steam-drum below the Water-line, substantially as described 2. In a water-tube boiler, the combination, with a water-drum of a steam-drum and watertubes connecting said drums below the waterline, of a return-pipe also connecting the water and steam drums below the water-line, a steam-separator placed within the steamdrum and comprising a separating-chamber formed by a casing having a slitted peripheral wall to provide a tangential inlet for the steam with its entrained water and having a ledge to separate the water from the steam, and suitable outlets for" the dry steam and Water, substantially as described.

3. In a Water-tube boiler, the combination,

with the water-drum of a steam-drum and and the walls of said slit being overlapped to provide a tangential inlet, an internal ledge on the wall of the casing to separate the water from the steam, and suitable outlets for the steam and Water, substantially as described.

GEORGE \VARRINGTON. JAMES N. \VARRINGTON.

\Vitnesses:

PAUL BLATCHFORD, FREDERICK O. GooDwIN. 

